Using instructions from an intriguing, 3,700 year-old inscription, a team of historians and expert boat builders investigates a fascinating flood legend and sets out to rebuild a tantalizing, ancient forerunner of the Ark.

In Building Wonders, Nova presents three groundbreaking shows that investigate engineering mysteries of the ancient world with the help of dramatic hands-on experiments. Modern architects use medieval tools to examine the Lost City of Petra in the middle of Jordan's desert, the vast Roman Colosseum, and Turkey's 1,500 year-old cathedral dome, Hagia Sophia.

Continues to examine 75 million years of the most credible alien evidence here on Earth. Season Three explores new directions, including sightings and phenomena from ancient times to the present. From the age of dinosaurs to ancient Egypt, from early cave drawings to continued mass sightings in the U.S., each episode gives historic depth to the questions, speculations, controversies, firsthand accounts and grounded theories surrounding an age-old...

Ancient fighting arts: Phil Keoghan tries an ancient martial art in India. Correspondents investigate deadly tornadoes, reporters at risk in Cambodia and talking whales. Border battle: Phil Keoghan experiences a unique border ceremony. Correspondents investigate deadly crocodiles, Red Notices and communication amongst trees. Digging up dinosaurs: Phil Keoghan digs for dinosaurs. Correspondents examine a global drop in male fertility, embed with...

Antisemitism in the US and Europe is rising and worsening, like a virus, it is mutating and evolving across cultures, borders and ideologies making it all but impossible to stop. Explore its infectious behavior and examine the increasing violence, which, when reviewed holistically, paints a terrifying portrait of how this kind of global hatred begins and how easily it disseminates.

In the second part of the season incredible new developments are explored in the search for evidence of extraterrestrial contact in our distant past, and even today. In Egypt, new technology has detected a previously unknown void in the Great Pyramid; on the island of Sardinia, ancient statues of giants with robotic faces are being shown to the public for the first time; and, in the north of England, scientists claim to have discovered what could...

With some 40 species of shark calling Hawaii's waters home, scientists are seeing new animal behavior around every corner. Hopping from island to island, uncover surprising moments of cooperation, rarely seen hunting tactics and striking insights into these predators. Meet the Whitetip reef shark, Whale shark, Tiger shark and more through the lens of remote sensor cameras and drone technology.

Among the biggest land mammals on the planet, bears need a lot of resources to survive and must use all of their skills, brawn, and brains to get what they need, whether they're foraging for honeycombs or tasty plants, standing up to their rivals, or raising cubs. Follow the adventures of bears across the globe as they draw on their remarkable adaptations to survive in an ever-changing world. Find out what it really takes to be a bear.

Explore incredible new developments in the search for extraterrestrial contact in the distant past, and even today. Does the government have knowledge of extraterrestrials visiting Earth?

With episodes on biodiversity, urban agriculture, and sustainability, this overview is the perfect way to dive into environmental issues for audiences of all ages.